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DiKsa [7]
3 years ago
6

Please help i need submit it in 10 mins! show work! i will mark brainliest!

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

C and D is the answer.

Step-by-step explanation:

If m∠5 = x°, according to the Corresponding Angle Theorem, m∠9 will equal the same, and because 9 and 12 are vertical angles, both of these will be the same measure.

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